<template>
	<div>
		<!-- 面包屑导航区 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }"
				>首页</el-breadcrumb-item
			>
			<el-breadcrumb-item>数据统计</el-breadcrumb-item>
			<el-breadcrumb-item>数据报表</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图区 -->
		<el-card>
			<!-- 为 ECharts 准备一个定义了宽高的 DOM -->
			<div id="main" style="width: 750px; height: 400px"></div>
		</el-card>
	</div>
</template>

<script>
// 引入基本模板
let echarts = require('echarts/lib/echarts');
// 引入柱状图组件
require('echarts/lib/chart/bar');
// 引入提示框和title组件
require('echarts/lib/component/tooltip');
require('echarts/lib/component/title');

import _ from 'lodash';

export default {
	data() {
		return {
			// 需要合并的数据
			options: {
				title: {
					text: '用户来源',
				},
				tooltip: {
					trigger: 'axis',
					axisPointer: {
						type: 'cross',
						label: {
							backgroundColor: '#E9EEF3',
						},
					},
				},
				grid: {
					left: '3%',
					right: '4%',
					bottom: '3%',
					containLabel: true,
				},
				xAxis: [
					{
						boundaryGap: false,
					},
				],
				yAxis: [
					{
						type: 'value',
					},
				],
			},
		};
	},
	created() {},
	// 此时, 页面上的元素已经被渲染完毕
	async mounted() {
		// 3.基于准备好的dom，初始化echarts实例
		var myChart = echarts.init(document.getElementById('main'));

		const { data: res } = await this.$http.get('reports/type/1');
		if (res.meta.status !== 200) {
			return this.$message.error('获取折线图数据失败');
		}

		// 4.准备数据和配置项
		const result = _.merge(res.data, this.options);

		// 5.展示数据
		myChart.setOption(result);
	},
	methods: {},
};
</script>

<style lang="scss" scoped></style>
